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    • 16. 发明授权
    • Electrooptical liquid crystal system
    • 电光液晶系统
    • US5958290A
    • 1999-09-28
    • US392682
    • 1995-02-23
    • David CoatesShirley MardenGraham SmithUlrich FinkenzellerVolker ReiffenrathReinhard HittichStefan Wilhelm
    • David CoatesShirley MardenGraham SmithUlrich FinkenzellerVolker ReiffenrathReinhard HittichStefan Wilhelm
    • C09K19/12C09K19/30C09K19/42C09K19/44C09K19/54G02F1/1334C09K19/52G02F1/133
    • G02F1/1334C09K19/12C09K19/3003C09K19/3028C09K19/42C09K19/44C09K19/544
    • The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.1 and, if present, A.sup.2, is also pyridine-2,5-diyl, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl, tetrahydropyran-2,5-diyl or naphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 are independently of one another a single bond, --CH.sub.2 CH.sub.2 --, --COO--, --OCO--, --C.tbd.C--, --CH.sub.2 O-- or any desired combinations of these bridge groups,Y and X are independently of one another H or F, and one of X and Y is also Cl,W is --CN, --Cl, --F, --CF.sub.3, --OCF.sub.3, --OCHF.sub.2, --NCS or R.sup.2R.sup.1 and R.sup.2 independently of one another are alkyl having 1-12 C atoms, in which one or 2 non-adjacent CH.sub.2 groups can also be replaced by --O-- or --HC.dbd.CH--, andm is 0, 1 or 2.
    • 本发明涉及一种电光学液晶体系,其包含介于两个电极之间的介电正极液晶混合物和另外的光学透明介质,所述两个电极任选地施加到基板上,所述基板在关闭状态下的液晶分子具有不规则取向, 液晶混合物的折射率之一基本上与基体nM的折射率一致,和/或其中液晶混合物的质量和光学透明介质的质量的商为1.5以上, ,其独立于入射光的偏振,与其他状态相比,在两种开关状态之一中具有降低的透射率,并且其液晶混合物含有一种或多种式I的化合物,其中Q1独立地为一个 另一个反式-1,4-亚环己基,1,4-亚苯基,2-氟-1,4-亚苯基,3-氟-1,4-亚苯基和A1中的一个,如果 t,A2也是吡啶-2,5-二基,嘧啶-2,5-二基,1,3-二恶烷-2,5-二基,四氢吡喃-2,5-二基或萘-2,6-二基, Z 1和Z 2彼此独立地是单键,-CH 2 CH 2 - , - COO - , - OCO-, - C 3BOND C - , - CH 2 O-或这些桥基的任何所需组合,Y和X彼此独立地 H或F,X和Y中的一个也是Cl,W是-CN,-Cl,-F,-CF 3,-OCF 3,-OCHF 2,-NCS或R 2,R 1和R 2彼此独立地是具有1- 12个C原子,其中一个或两个不相邻的CH2基团也可以被-O-或-HC = CH-取代,m是0,1或2。
    • 17. 发明授权
    • Haloacetylene derivatives
    • 甲基乙烯衍生物
    • US5188759A
    • 1993-02-23
    • US648627
    • 1991-02-01
    • Ekkehard BartmannReinhard HittichHerbert PlachUlrich Finkenzeller
    • Ekkehard BartmannReinhard HittichHerbert PlachUlrich Finkenzeller
    • C07C22/00C07C22/04C07C22/08C09K19/04C09K19/20C09K19/30C09K19/32C09K19/34C09K19/52C07C69/76
    • C09K19/2007C07C22/00C07C22/04C07C22/08C09K19/04C09K19/30C09K19/3003C09K19/3098C09K19/321C09K19/3441C07C2101/14
    • The invention relates to a liquid crystalline medium having at least two components, where at least one component is a haloacetylene derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --(A.sup.2 --Z.sup.2).sub.m --A.sup.3 --C.tbd.C--X IwhereinR.sup.1 is an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted or monosubstituted by CN, halogen or CF.sub.3, or such a radical wherein one or more CH.sub.2 groups is replaced, in each case independently of one another, by --S--, --O--, ##STR1## --CO--, --CO--O--, --O--CO-- or --O--CO--O-- in such a manner that sulfur and/or oxygen atoms are not linked directly to one another,A.sup.1, A.sup.2 and A.sup.3, in each case independently of one another, are(a) a trans-1,4-cyclohexylene radical or --S-- one or more non-adjacent CH.sub.2 groups is replaced by --O-- and/or --S--,(b) a 1,4-phenyllene radical N" in which one or two CH groups is replaced by N,(c) 1,3-cyclobutylene, 1,3-bicyclo(1,1,1)pentylene, 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)octylene, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 independently of one another, are --CH.sub.2 CH.sub.2 --, --C.dbd.C--, --CH.sub.2 O--, --OCH.sub.2 --, --CO--O--, --O--CO--, --CH.dbd.N--, --N.dbd.CH--, --CH.sub.2 S--, --SCH.sub.2 --, a single bond or an alkylene group having 3 to 6 carbon atoms in which one CH.sub.2 group may be replaced by --O--, --CO--O--, --O--CO--, --CH halogen-- or --CHCN--,X is F, Cl, --NCS, Br, --OCF.sub.3 or --SCF.sub.3, andm is 0, 1 or 2.
    • 本发明涉及具有至少两种组分的液晶介质,其中至少一种组分是式I的卤代乙炔衍生物R1-A1-Z1-(A2-Z2)m-A3-C 3BOND CX I其中R1是 具有至多15个碳原子的烷基或链烯基,其被未取代的或被CN,卤素或CF 3单取代,或者其中一个或多个CH 2基团在每种情况下彼此独立地被-S-,-O - , - , - CO - , - CO-O-,-O-CO-或-O-CO-O-,使得硫和/或氧原子彼此不直接连接,A1,A2 和A3各自独立地为(a)反式-1,4-亚环己基或-S-一个或多个不相邻的CH 2基团被-O-和/或-S-取代,( b)其中一个或两个CH基团被N,(c)1,3-环丁烯,1,3-二环(1,1,1)亚戊基,1,4 - 环己烯,1,4-二环(2,2,2)亚辛基,萘-2,6-二基,十氢萘-2,6-二基和1,2,3,4 四氢萘-2,6-二基,Z 1和Z 2彼此独立地是-CH 2 CH 2 - , - C = C - , - CH 2 O - , - OCH 2 - , - CO-O-,-O-CO-, - CH = N,-N = CH-,-CH 2 S-,-SCH 2 - ,单键或碳原子数3〜6的亚烷基,其中一个CH 2基可以被-O - , - CO-O-, -O-CO-,-CH-或-CHCN-,X是F,Cl,-NCS,Br,-OCF3或-SCF3,m是0,1或2。
    • 18. 发明授权
    • Electrooptical liquid-crystal system
    • 电光液晶系统
    • US5344587A
    • 1994-09-06
    • US687852
    • 1991-06-03
    • David CoatesShirley MardenGraham SmithUlrich FinkenzellerVolker ReiffenrathReinhard HittichStefan Wilhelm
    • David CoatesShirley MardenGraham SmithUlrich FinkenzellerVolker ReiffenrathReinhard HittichStefan Wilhelm
    • G02F1/13C09K19/00C09K19/12C09K19/30C09K19/42C09K19/44C09K19/54G02F1/133C09K19/52
    • C09K19/12C09K19/3003C09K19/3028C09K19/42C09K19/44C09K19/544
    • The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-l,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.1 and, if present, A.sup.2, is also pyridine-2,5-diyl, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl, tetrahydropyran-2,5-diyl or naphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 are independently of one another a single bond, --CH.sub.2 CH.sub.2 --, --COO--, --OCO--, --C--C--, --CH.sub.2 O-- or any desired combinations of these bridge groups,Y and X are independently of one another H or F, and one of X and Y is also Cl,W is --CN, --Cl, --F, --CF.sub.3, --OCF.sub.3, --OCHF.sub.2, --NCS or R.sup.2R.sup.1 and R.sup.2 independently of one another are alkyl having 1-12 C atoms, in which one or 2 non-adjacent CH.sub.2 groups can also be replaced by --O-- or --HC.dbd.CH--, andm is 0, 1 or 2.
    • 本发明涉及一种电光学液晶体系,其包含介于两个电极之间的介电正极液晶混合物和另外的光学透明介质,所述两个电极任选地施加到基板上,所述基板在关闭状态下的液晶分子具有不规则取向, 液晶混合物的折射率之一基本上与基体nM的折射率一致,和/或其中液晶混合物的质量和光学透明介质的质量的商为1.5以上, ,其独立于入射光的偏振,与其他状态相比,在两种开关状态之一中具有减小的透射率,并且其液晶混合物含有一种或多种式I的化合物I I,其中Q1是 相对于反式-1,4-亚环己基,1,4-亚苯基,2-氟-1,4-亚苯基,3-氟-1,4-亚苯基, A1中的一个,如果存在,A2也是吡啶-2,5-二基,嘧啶-2,5-二基,1,3-二恶烷-2,5-二基,四氢吡喃-2,5-二基或萘 -2,6-二基,Z1和Z2彼此独立地为单键,-CH2CH2-,-COO-,-OCO-,-CC-,-CH2O-或这些桥基的任何所需组合,Y和X 独立地为H或F,X和Y中的一个也是Cl,W是-CN,-Cl,-F,-CF 3,-OCF 3,-OCHF 2,-NCS或R 2 R 1和R 2彼此独立地 是具有1-12个C原子的烷基,其中一个或两个不相邻的CH 2基团也可被-O-或-HC = CH-取代,m是0,1或2。